Liquid-temperature regulator.



No. 732,054. PATENTED JUNE 30, 1903. H. A. R. DIETRICH. LIQUID TEMPERATURE REGULATOR.

APPLICATION FILED MAY 23. 1902.

2 SHEETS-SHEET 1.

N0 MODEL.

PATENTED JUNE 30, 1903.

H. A. R. DIETRICH. LIQUID TEMPERATURE REGULATOR.

APPLIOATION FILED MAY 23, 1902.

2 SHEETS-$113111 2.

N0 MODEL UNITED STATES Patented June 30, 1903 PATENT OFFICE.

LIQUID-TEMPERATURE REGULATOR.

SPECIFICATION forming part of Letters Patent No. 732,054, dated June 30, 1903.

Application file d May 23, 1902.

a citizen of the United States, residing at.

South Bethlehem, in the county of Northampton and State of Pennsylvania, have invented a new and useful Liquid-Temperature Regulator, of which the following isaspecifioation.

This invention relates to certain improvements in thermostatic heat regulators in which a movement is imparted to a damper, valve, or the like by the expansion or contraction of metallic substances subjected to the action of heat or cold.

The principal object of the invention is to provide an improved form of thermostatic regulator for governing'and regulating the temperature of fluids or liquids, by which an extended movement may be imparted to the controlled device by the small initial move ment due to the expansion of metal under the influence of heat or cold.

With these and other objects in view the invention consists in the novel construction and arrangement of parts hereinafter described,illustrated in the accompanying drawings, and particularly pointed out in the appended claims.

In the drawings, Figure l is a side elevation, partially in section, of a temperatureregulator constructed in accordance with my invention. Fig. 2 is an end elevation of the same. Fig. 3 is a perspective view, in the nature of a diagram, illustrating a number of the levers and their connecting rods and clearly showing the connections of the levers and rods in a continuous series. Fig. 4 is an inverted plan View of the bottom section of the device, illustrating the arrangement of the connecting-levers. Fig. 5 is an elevation of one of said levers detached. Fig. 6 is a side elevation of one of the lever carrying heads.

Similar numerals of reference are employed to indicate corresponding parts thoughout the several figures of the drawings.

10 designates a pipe-section, which may be formed of iron or other suitable metal, and to the opposite ends of said pipe are secured coupling-heads 11 and 12, from which extend tubes 13 and 14, respectively, to a vessel con- $eria1No.108,730- (No model.)

taining the liquid or fluid the temperature of which it is desired to regulate. Extending through the tube 10 and the couplingheads is a tube or rod 15, formed of brass or other metal. One end of the tube or rod 15 is secured to the lower coupling-head 12, and the upper coupling-head is provided with a stuffing-box 17, through which the upper end of the tube or rod is passed to permit free longitudinal movement of said tubes when subjected to the influence of heat or cold, the fluid or liquid to be regulated circulating through the pipes or tubes 10, 13, and 14 from the containing vessel 18, as indicated by dotted lines in Fig. 2.

To the upper and lower ends of the tube or rod 15 are secured pivot heads or blocks 18 and 19, respectively, each block being of substantially the same construction and having a plurality of slots forming a series of spaced pivot-lugs 20, each having an opening for the reception of a pin or bolt 21, on which are pivoted the levers 22 and 23. The pivotal openings 24: of the levers are arranged closer to one end of said levers than the other, and at the top of the device the shorter ends of the upper sets of levers are pivoted at one side of the center of the block, while at the lower end of the device the shorter ends of the lovers are located on the opposite side of the block. The longer ends of the lower set of lovers are connectedto the shorter ends of the upper set of levers by rods 25, and the longer ends of the upper set of levers are connected to the shorterends of the lower set by rods 26. The initial rod 27 of the series is provided witha threaded end, passing through an opening in the upper coupling 11 and-provided with a securingnut. This rod extends from the upper coupling 11 to the first lever of the series23, said lever being shown to the left of Fig.2, and the final rod 28 of the series of leversis'connected to a valve or damper arm 29, arranged in a tube or flue communicating with the tank or other vessel containing the fluidor liquid, as indicated by dotted lines in Fig. 2. A portion of the fluid or liquid circulates through the chamber formed by tube 10 coming in contact with the brass or other tube 15 and causing the expansion of both tubes to an extent determined by the degree of heat of the fluid or liquid. The expansion of the tube 10 extends the distance between the coupling-heads 11 and 12, and as the coupling 11 is connected to the initial rod 27 of the series said rod will be raised and slightly elevate the first of the series of levers 23, pivoted to the head 19. This movement is transmitted to the series of levers and rods and additional movement is imparted thereto by, the expansion of the tube 15, which moving through the stuffing-box 17 raises the head 18 and considerably increases the initial movement imparted to the rod 27. As the longer end of each lever is connected to the shorter end of a mating lever, as shown in Fig. 3, the result of the expansive movement of the tubes will be a progressive movement of all of the levers and rods, the first lever causing a greater movement of the second lever'than that imparted to it and the second lever imparting to the third lever a greater degree of movement than that which said second lever received from the initial lever of the series. In this way the comparatively small initial movement due to the expansion of the tubes is multiplied or increased progressively throughout the entire set of levers, the final lever 28 receiving an extended movement capable of closing or opening a valve, damper, or like object for controlling the flow of fluid or liquid to or from the vessel to which the regulator is attached.

The device may be employed in connection with any liquid-containing vesseisuch as steam-boilers,water-heaters, cooking,dyeing, or other vessels'or may be subjected to the influence of steam or hot air and its operatingrod connected to a regulating-damper for governing the supply of air to a furnace or. the flow of heated air therefrom, for opening and closing a steam or other valve, or for opening or closing a Window or ventilator in a room or other place where the device vis to beemployed,

While the construction herein described, and illustrated in the accompanying drawings, is the preferred form of the device, it is obvious that various changes in the form, proportions, size, and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus described my invention, what I claim is 1. The combination in a thermostatic regulator, of a pair of tubes formed of expa-nsible material and arranged to form a chamber for the reception of a fluid, a relatively fixed support to which one end of each tube issecured, the opposite ends of both tubes being free to expand in the same direction, a fixed pivotblock, a second pivot-block carried by one of the tubes, a system of multiplying levers lator, of a pair of concentrically-disposed.

tubes formed of expansible material and arranged to form a chamber for the reception of fluid, a relatively fixed support to which one end of each tube is secured, the opposite ends of both tubes being free to move in the same direction as the tubes expand or contract, a stuffing-box carried by the outer tube member for the passage of the inner tube member, a fixed pivot-block, a second pivotblock carried by the free end of the inner tube member and movable away from the fixed block during the expansion of said inner tube member, a system of multiplyinglevers pivoted to the blocks, rods connecting said levers, and means for connecting the initial rod of the series to the movable end of the outer tube member.

3. The combination in a thermostatic regu lator, of a pair of expansible tubes arranged to form an annular chamber for the reception of a fluid, a relatively fixed support to which one end of each tube is secured, the opposite ends of both the inner and outer tubes being free to move in the same direction as the tubes expand or contract, upper and lower pivot-blocks carried by the inner tube member, the block at the fixed end of said tube being relatively stationary and the block at the free end of said tube being movable as the tube expands or contraots, a stuffing-box carried by the outer tube member for the passage of said inner tube member, a series of multiplying-levers pivoted to both blocks, rods connecting the levers in a continuous series, and means for connecting the initial rod of the series to the free end of the outer tube member, substantially as specified.

4. The combination in a thermostatic regulator, of a pair of concentric tubes arranged to form an annular fluid-receiving chamber,

fixed and movable couplings to which the opposite ends of the outer tube are secured, a stuffing-box carried by the movable coupling to permit the passage of the inner tube, fixed and movable pivot-blocks disposed respectively at opposite ends of the inner tube, 'a series of multiplying-levers mounted on said blocks, rods connecting said levers in a continuous series, and means for connecting the initial rod of the series to said movable coupling.

5. The combination in a thermostatic regulator, of a pair of expansible tubes arranged one within the other and forming an annular fluid-receiving chamber, one end of each of the tubes being fixed and the opposite ends of both tubes being free to move in the same direction as said tubes expand, a system of my own I have hereto affixed my signature in pivotally-monnted multiplying-levers conthe presence of two witnesses. nected in series, and means for connecting one of the tubes to the initial rod of the series HARRY DIETRIOH' 5 and for connecting the opposite tube to the Witnesses:

pivotal support of said levers. HOWARD S. HESS,

In testimony that I claim the foregoing as J. WM. BURCHEAD. 

